1PIE

Crystal Structure of Lactococcus lactis Galactokinase Complexed with Galactose

• PDB DOI: https://doi.org/10.2210/pdb1PIE/pdb

• Classification: TRANSFERASE
• Organism(s): Lactococcus lactis
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2003-05-30 Released: 2003-09-23 
• Deposition Author(s): Thoden, J.B., Holden, H.M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.266 
• R-Value Work: 0.199 
• R-Value Observed: 0.204 

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 46.36 kDa 
• Atom Count: 3,166 
• Modelled Residue Count: 388 
• Deposited Residue Count: 419 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Galactokinase	A	419	Lactococcus lactis	Mutation(s): 0  Gene Names: GALK EC: 2.7.1.6
UniProt
Find proteins for Q9R7D7 (Lactococcus lactis subsp. lactis (strain IL1403)) Explore Q9R7D7  Go to UniProtKB:  Q9R7D7

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GLA	B [auth A]	alpha-D-galactopyranose C6 H12 O6 WQZGKKKJIJFFOK-PHYPRBDBSA-N
PO4	C [auth A]	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.266 
• R-Value Work: 0.199 
• R-Value Observed: 0.204 
• Space Group: I 2 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 143.4	α = 90
b = 143.4	β = 90
c = 143.4	γ = 90

Software Package:

Software Name	Purpose
d*TREK	data scaling
HKL-2000	data reduction
SOLVE	phasing
TNT	refinement
d*TREK	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-09-23 
Deposition Author(s): Thoden, J.B., Holden, H.M.

Revision History  

• Version 1.0: 2003-09-23
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Data collection, Database references, Derived calculations, Structure summary
• Version 1.4: 2024-02-14
  Changes: Data collection, Database references, Structure summary